Filter



Oct. 10, 1944. R. L. sKlNNER ErAL FILTER Filed July 22, 1942 2Sheets-Sheet l INVENTOR.

Oct. l0, 1944, R. L. sKlNNER l:a1-Al.

FILTER Filed July 22, 1942 2 Sheets-Sheet 2 INVENTORS. wiz/ zziiwzefMalz'f mier?) Patented Octyio, I1944 Ralph L. Skinner, Birmingham; andWalter Kasten, Franklin, Mich.: said Kasten assigner, to

said Skinner 'Application' July'zz, 1942, l.sex-iai No'. 451,936 i zclaims. (ci. 21o- 183) vThe current invention concerns certain novelstructural features in lter's and more particularly in filters of theedge-type, wherein the filtering `actionoccurs between, rather thanthrough, the discs of the filter-pack. y

One aim of the. invention is to provide a construction from which thefilter-pack may be` easily and readily removed for cleaning orreplacement purposes and which isA adequately sealed against pressureswhen in proper operative place in the filter.

A further object'of the invention is to' supply lan ecient filter whichis relatively/cheap. to construct and which yet possesses outstandingefciency in operation. e n

An added purpose of the invention is to provide a lter which`is notsubject to damage or injuryy during ordinary service and when it isbeing dismantled or its parts reassembled.

' To enable those acquainted with this art to understand the advantagesof this invention fully from structural and functional standpoints, a

present, vpreferred embodiment of the invention has been illustrated indetail in the accompany ing drawingsand for simplicity, like referencenumerals have.be/envemployed to designate the same parts'throughout theseveral views.

In these drawings:

, an agent, which prevents the liquid or gas to be i' material of thebodies of the discs, are mounted is of double-thickness of metal,whereas the other two 20, 2| are of single-thickness-with laterally-lbentsections 22, l22, the lower end of such rod having threedownwardly-directed'ears 23, 23, '23, extended through holes 24, 26, 24in an end metal-disc or terminal memberand bent over` below the disc at26, 28, V28 to hold the disc y attached or amxed permanently to the rod,such l,

disc 25having in addition marginal ears 2l, 21, 2l bent around the, topvring or convolution of a spiral-spring 28 thus xedly securing thespringy to the underside of the disc. A

An edge-filtration stack or pack 30 ofjwashershaped paper,uneven-surface or othercomparable discs suitably charged lor impregnatedwith filtered or any of i contaminants orfdiluents from deleteriously orinjuriously affecting the iace-to-face on, and maintained in superposedregister. with, one anothernby the rod I8, the. diameter of whichispractically `the same as the internal caliber Vof the central-passage ofthe filter-pack 30 formed by the aligned or registered apertures of thenumerous discs, the bottom disc bearing oni the upper' surface of theterminal metal disc 25.. A

Figure 1 is a longitudinal', ,vertical section@ through the centerv ofthe filter with its lower portion partly or slightly in' perspective.

Figure 2 is a horizontal cross-section on line ,2 2 of Figure 1r, theparts being viewed down- Wardly;

Flgure shows in separated relation and partly in perspective, thenormally assoc-lated members at the bottom ofthe filter-pack; and yFigure4 presents all of the parts of the structure in perspective andinnon-assembled rela.-

tion.

that the new and improved lterincludes a main,

' hollow-supporting body, casting; or head il pro vided with ascrew-threaded inlet-passagel I2 communicating with the side of themain, cylindrlcal chamberv I3, the latter .having a downiwardly-open,larger, internally-screw-threaded mouthl Id, chamber ILalso having areduceddiameten cylindrical,centrallyelocated upward? iltted with aypair of Aapertured, oppositely-,out-

oand bolts or screws (not shown) the filter may ,be fastened toasnuitable support.l

The filter-pack, which performs the -filtering Referring to thesedrawings, it will be observed As is clearly presented in the drawings,the top,

end, paper-disc of the pack 30 bears against the under or inner surfaceof the top end-wall 29, of a sheet-metal, cylindricaLccmbined shieldfdistributor' or barrier,3l extended downwardly around, and spaced away"from, fthe corresponding portion of the filter-pack, the lower end ofsuch` member 3l flaring outwardly as shown at 32, such shield or guardextending downwardly ywell below the lvl of the opening of inlet I2 intoChamber f3.

'As portrayed in the drawings, th`is sheet-metal cover 3i at itstop endextends inwardly at 29 forming ashoulder against the bottom surface ofwhichthe filter-pack bears, Ithenupwardly at 33 providing a roundopening through which the rod I8 -extendskand then outwardly at 34 the lstanding lugsI or ears il, l1 by means of which operation,includesacentral, longitudinally-bent,

sheet-metal rod I8 having three more 'orless 'fadially-disposedribs orarms,` of which one I9 three parts 29, 33 and 3l clamping firmly and Yfixedly between them theA inner round portion4 y of a ring-shapedleatheror other comparable gasket 35 of right-angle' cross-section asseen in 50, Figure 1, the dthercircular section 36 of such extension I5connectedto the screw-'threaded outlet or'discharge passage I6, castingII lbeing right-angle being located btween the top portionvofvthe'round-wall of chamber I3 and the round n outer' surface ofimember 3l, the lower edge of the part 3l of4 the gasket being bevelledupwardly dicated. i ,Y o

A cross-pin 38 extends through a hole through inwardly. at v3'! `r`for-a purpose hereinafter in- 'the central rod IB and its protrudingv endsbear l on the l,top face o f the part 34. of the member 3|, but beforesuch-,pin is inserted inthe relation shown, the metal 'end disc 25 andthe intervening" filter-discs of the pack 30 are pressed upwardly toestablish suitable and adequate endwise pressure onthe series oflterediscs to maintain the proper` shallow width of gaps between theirsur- ',faces, and,'while such pressure is thus exerted,

the cross-pin is put in place\and holds the parts thus pressed togetherface-to-face.

Fromwhat precedes, it'will be obvious that,

^ when the members are assembled as shown and described, thosecharacterized I3, 30, 25, 23, 3|, 35. 33 and constitute auniti-assembly. d

-A sheet-metal shell or casing 33 `with a rounded, lower endI 4I and anoutstanding, circular ange 42 surrounding the top, open mouth of themember 39'encloses a substantial portion of theiilter-pack 33 and apqart of the shield or distributor 3l, the top face of suchcasing-flange 42 bearing against the under surface of a ringgasket 43 ofsuitable material, dependent upon the nature of the material to b elt'ered, forinstance a neoprene gasket if oil is to be filtered, theupper face of such gasket pressing against a fiat, horizontal shoulder44 of the main-body `I I, another ring-gasket 45 being interposedbetween the under surface of the flange 42 and the top fiat end of a`hollow nut 46 having an angular A head 41 by which it may be turned, theexterior 35-36 in firm engagement with theupper end'- wall of chamberI3. y

To hold nut 46 from becoming loose or displaced, itV may be held fromturning by a wire 48 taking through the hole of an outstanding part 49of the member Il and through one of a series of `holes i in the head 41of the nut.

When the oil or other fluid to be filtered enters chamber I3 throughinlet I2, to which any supply conduit may be easily connected,`itspressure 'acting on the bevelled end of the round gasket 3.5-36 forcesthe depending part of the gasket outwardly circular-ly into firm andpressure-tight relation with the adjacent side-wall of the chamber', andthe' greater the pressure of the iiuid, the greater the sealing actionof the gasket, this sealing function being depended upon rather thanthat of the spring-pressed relation of the other companion `portion ofthe gasket with the upper end-wall of the chamber.

The distributor 3| prevents the'entering oil or other fluid fromimpinging directly on the filterpack, causing such oil or fluid to beevenly dis'- tributed around and alon'g the full length of the latterthereby securing uniformity of the filtering a,seo,oso

Also, prior to mounting the filter-paper pack 3l on ts centraLinetaLretaining rod Il, the opposite' ends oi' menacer-pack. the inner surfaceof that part 23o! the metal-baille Il on which the pack is to bear, andthe top or upper surface 'of the metal'disc 2l are coated with asolution of a phenolic-resin or other plastic vsealing compound, and,after the parts have been assembled, such coating is cured orpolymeriaed to prev vent leakage between the surfaces involved.

with this art will readily understand that, whereas certain details ofstructure have been presented herein, the invention its deiined by theappended claims is not necessarily limited and restricted to such minorfestures and changes and modifications may be resorted to withoutdeparture from the heart and essence lof the -invention and without theloss or sacrifice of any of its substantial or material benefits andadvantages.

We claim: 1

1. In an edge-nitration filter including a mainbody with a cylindricalchamber having an inlet action throughout the whole surface of the.pack,

the liquid which misses between the discs enter'- ing the inner passageof the pack and flowing out of the discharge opening I6 which maybeconnected to any suitable conduit or pipe.

In assembling the leather-gasket. 35-36v on the cup-shaped baille 3|, acoat of a solution of a phenolicresin, such as Beckophene, is applied tothe gasket or to the corresponding'portion of the baille or to both, andthen polymerized by subjecting ,it to a known heat treatment in` orderto preclude any leaking between the two elements.

for the.iiuidfto be filtered,'an outlet for the fil.

Atered i'iuid, and a seat'surroimding said outlet, -a

- wardly beyond the top end of said passage, and

a cross-member connected to said protruding. part of said rod andoverlying the corresponding end of the filter-element, the novelcombination a oi' a hollow, upright cylindrical bame in said ene 'saidbaille end-wall, and ,a gasket of angular crosssection fastened to saidbadie and having a first portion bearing against said seat and acircular second portion between the cylindrical wall of said baille andthe cylindrical surface of said chamber, and means to press the unitstructure of the filter-element, end-member, rod, crossmember, baii'ieand gasket upwardly against said' seat, whereby demounting of saidcasing permits RALPH n amm ,WALTER xss'rmz.

